一起干式负载柜绝缘击穿故障的原因分析  

Cause analysis of insulation breakdown in a dry load bank

作　　者：洪星 HONG Xing

机构地区：[1]南通中远海运川崎船舶工程有限公司,江苏南通226000

出　　处：《中国修船》2024年第1期6-8,13,共4页China Shiprepair

摘　　要：文章从不同的角度对一起干式负载柜绝缘击穿故障的原因进行分析,最终确定绝缘击穿是由冷凝水引起的间歇性接地所致。研究还发现,对于三相对地绝缘系统,一相间歇性接地可能引起其它两相产生数倍于电源电压的高压。This paper analyzes the reasons for the insulation breakdown of a dry load cabinet from different per⁃spectives,and ultimately concludes that insulation breakdown is caused by intermittent grounding produced by con⁃densation water.This study also finds that for three-phase to ground insulation systems,intermittent grounding of one phase may cause the other two phases to generate high voltage several times more than the power supply voltage.

关 键 词：干式负载柜 三相对地绝缘系统 间歇性接地 

分 类 号：U672[交通运输工程—船舶及航道工程]